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High Quality Electric Heaters - Finned Tubular Heater – PAMAENS TECHNOLOGY

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High Quality Electric Heaters - Finned Tubular Heater – PAMAENS TECHNOLOGY Detail:

Specification

Item Name

Finned Tubular Heater

Item No.

PM-FTH

Voltage

6-600 V

Wattage

Customized

Max. wattage density

50w /sq cm

Tube diameter

3 mm to 30 mm (customized)

Fins diameter

15-45 mm

Fins thickness

2-6 mm

Shape

U shape, W shape, Coil shape, double W shape, straight, etc

Max. operating temp:

1000°C (depending on material)

Diameter tolerance

+/- 0.1mm

Length tolerance

+/- 3% (depending on different shapes)

Wattage tolerance

+/- 5%

Voltage tolerance

+/- 5%

Certificates

CE, RoHs

Packaging

Carton box / fumigation free wooden case

Material

Core

Cr20Ni80, high quality Swedish resistance wire is avalible

Insulation

High purity compacted magnesium Oxide

Sheath material

SS304 / SS316L / Incoloy 800 / Copper / SS201 with or w/o Teflon coating

Fins

SS304 / SS316L / Copper / SS201 / Iron

Accessories Information

Threads

Customized (such as M10, M12 etc)

Wire

High temperature resistance wire available

Description

Introductions of Finned Tubular Heater

In applications where Finned Tubular Electric Heaters are exposed to forced convection, placing fins around tubular heaters increases their surface area and thus improves their heat transferring capacity. Finned tubular heaters, compared to regular tubular heaters, run at lower surface temperatures for the same watt densities when placed in identical air streams. Graph 1 compares watt density, outlet air temperature, and the speed of air flow for regular and finned tubular heaters respectively. Despite their advantages, finned tubular heaters are not recommended for applications where outlet air temperatures exceed 600°F.
 
The physical characteristics of Finned Tubular Electric Heaters play a major role in the effectiveness of its heat transfer. The table below specifies the outside diameter of fins, their thickness, the spacing between consecutive fins, as well as the element sheath and fin material.

The feature of Finned Tubular Heater

1. Easy to install, control and maintain.

2. Wide applications ( any tanks, drums or vessels with liquid or gases)

3. Heating fast and efficiently

4. Health and Safety

5. Could be used in very high temperature, strong corrosive medium

The applications of Finned Tubular Heater

1. Duct Heater

2. Load Bank

3. Air condition systems

4. Ovens

5. Burn Ovens

6. Forced air duct heating

RFQ

1. Diameter of heating tube and diameter of the finnes

2. Length or width

3. Shapes or drawings

4. Voltage & wattage

5. Quantity

Reference information may help for your choice

Tab1 : list various sheath materials, maximum allowable temperatures and mediums within which they are recommended to operate.

Tab2 : list recommended maximum watt densities and medium for different materials.

Tab1

   

Sheath Material

Maximum Sheath Temperature

Applications

Copper

350 °F (170 °C)

Immersion into water ,non corrosive low viscosity liquids

Steel

750 °F (400 °C)

Oil, wax, asphalt, cast in aluminum or iron

Stainless Steel 304-316

1200 °F (600 °C)

Corrosive liquids, food industry, sterilizers

Incoloy

1500 °F (815 °C)

Air, corrosive liquids, clamped to surfaces

Tab2

   

Sheath Material

Maximum Watts/cm2

Medium

Copper

7 W/cm2

Water, weak acid liquid

Copper

2.5 W/cm2

Food oil, lubricating oil, hydraulic oil

Stainless Steel 304-316

11 W/cm2

Water, weak acid liquid

Stainless Steel 304-316

2.5 W/cm2

Food oil, lubricating oil, hydraulic oil

Stainless Steel 304-316

5 W/cm2

Still air

Stainless Steel 304-316

5.5 W/cm2

Flow rate is not low 6m/s air

Stainless Steel 304-316

13 W/cm2

cast in aluminum or iron

Incoloy

10 W/cm2

Still air

Incoloy

11 W/cm2

Flow rate is not low 6m/s air


Product detail pictures:

High Quality Electric Heaters -
 Finned Tubular Heater – PAMAENS TECHNOLOGY detail pictures


Related Product Guide:
How Do Tankless Coil and Indirect Water Heaters Work?
Tips For Safely Using Drum Heaters

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